ASTROSAT CZTI

Data Quality Report

Orbit 34959

Creation date: 2022-03-17T05:46:08.919439
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A11_047T09_9000005010_34959cztM0_level2.evt modeM0/AS1A11_047T09_9000005010_34959cztM0_level2_quad_clean.evt
Size (bytes)404,881,92060,554,880
Size386.1 MB 57.7 MB
Events in quadrant A2,375,618384,156
Events in quadrant B3,216,159375,062
Events in quadrant C2,758,949375,394
Events in quadrant D3,573,907350,627

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0101943
B0126862
C0110422
D0138522

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320
B0320
C0320
D0330

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A496130.060472%
B49612515.059464%
C4961801.612578%
D49611032.076194%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7083 4962 0 0 0.00% 0.00%
B 7083 4962 208 208 2.94% 4.19%
C 7083 4962 69 69 0.97% 1.39%
D 7083 4962 99 99 1.40% 2.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 83 68817 573.54 591 582 119.0
A 13 254 9122 71.78 591 582 119.0
A 13 6 8648 67.8 591 582 119.0
B 5 172 890159 8063.28 578 563 110.3
B 4 232 37831 337.8 578 563 110.3
B 12 111 13355 115.95 578 563 110.3
C 0 10 267496 1992.33 575 579 134.0
C 15 214 210603 1567.67 575 579 134.0
C 14 67 17236 124.33 575 579 134.0
D 8 195 944026 6813.95 568 554 138.5
D 13 249 194965 1404.07 568 554 138.5
D 10 118 63494 454.56 568 554 138.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter